diff --git a/tests/sockaddr_str/sockaddr_str_test.c b/tests/sockaddr_str/sockaddr_str_test.c
index 676068cf1..4e8500ba1 100644
--- a/tests/sockaddr_str/sockaddr_str_test.c
+++ b/tests/sockaddr_str/sockaddr_str_test.c
@@ -73,6 +73,8 @@ static inline const char *rc_name(int rc)
 	switch (rc) {
 	case -EINVAL:
 		return "rc == -EINVAL";
+	case -EAFNOSUPPORT:
+		return "rc == -EAFNOSUPPORT";
 	case 0:
 		return "rc == 0";
 	default:
diff --git a/tests/sockaddr_str/sockaddr_str_test.ok b/tests/sockaddr_str/sockaddr_str_test.ok
index e24d7cbc4..a8c16614f 100644
--- a/tests/sockaddr_str/sockaddr_str_test.ok
+++ b/tests/sockaddr_str/sockaddr_str_test.ok
@@ -89,11 +89,11 @@
   OSMO_SOCKADDR_STR_FMT: '[1:2:3::4]:5'
   osmo_sockaddr_str_is_set() = true
   osmo_sockaddr_str_is_nonzero() = true
-  osmo_sockaddr_str_to_in_addr() rc < 0 in_addr=00000000
+  osmo_sockaddr_str_to_in_addr() rc == -EAFNOSUPPORT in_addr=00000000
   osmo_sockaddr_str_to_in6_addr() rc == 0 in6_addr=00010002000300000000000000000004
    -> osmo_sockaddr_str_from_in6_addr() rc == 0 { .af = AF_INET6, .ip = "1:2:3::4", .port = 5 }
-  osmo_sockaddr_str_to_32() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
-  osmo_sockaddr_str_to_32h() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32h() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
   osmo_sockaddr_str_to_sockaddr_in() rc == -EINVAL sockaddr_in=00000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr_in6() rc == 0 sockaddr_in6=0a000005000000000001000200030000000000000000000400000000
    -> osmo_sockaddr_str_from_sockaddr_in6() rc == 0 { .af = AF_INET6, .ip = "1:2:3::4", .port = 5 }
@@ -106,11 +106,11 @@
   OSMO_SOCKADDR_STR_FMT: '[::]:0'
   osmo_sockaddr_str_is_set() = false
   osmo_sockaddr_str_is_nonzero() = false
-  osmo_sockaddr_str_to_in_addr() rc < 0 in_addr=00000000
+  osmo_sockaddr_str_to_in_addr() rc == -EAFNOSUPPORT in_addr=00000000
   osmo_sockaddr_str_to_in6_addr() rc == 0 in6_addr=00000000000000000000000000000000
    -> osmo_sockaddr_str_from_in6_addr() rc == 0 { .af = AF_INET6, .ip = "::", .port = 0 }
-  osmo_sockaddr_str_to_32() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
-  osmo_sockaddr_str_to_32h() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32h() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
   osmo_sockaddr_str_to_sockaddr_in() rc == -EINVAL sockaddr_in=00000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr_in6() rc == 0 sockaddr_in6=0a000000000000000000000000000000000000000000000000000000
    -> osmo_sockaddr_str_from_sockaddr_in6() rc == 0 { .af = AF_INET6, .ip = "::", .port = 0 }
@@ -123,11 +123,11 @@
   OSMO_SOCKADDR_STR_FMT: '[::1]:0'
   osmo_sockaddr_str_is_set() = false
   osmo_sockaddr_str_is_nonzero() = false
-  osmo_sockaddr_str_to_in_addr() rc < 0 in_addr=00000000
+  osmo_sockaddr_str_to_in_addr() rc == -EAFNOSUPPORT in_addr=00000000
   osmo_sockaddr_str_to_in6_addr() rc == 0 in6_addr=00000000000000000000000000000001
    -> osmo_sockaddr_str_from_in6_addr() rc == 0 { .af = AF_INET6, .ip = "::1", .port = 0 }
-  osmo_sockaddr_str_to_32() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
-  osmo_sockaddr_str_to_32h() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32h() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
   osmo_sockaddr_str_to_sockaddr_in() rc == -EINVAL sockaddr_in=00000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr_in6() rc == 0 sockaddr_in6=0a000000000000000000000000000000000000000000000100000000
    -> osmo_sockaddr_str_from_sockaddr_in6() rc == 0 { .af = AF_INET6, .ip = "::1", .port = 0 }
@@ -140,11 +140,11 @@
   OSMO_SOCKADDR_STR_FMT: '[ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff]:65535'
   osmo_sockaddr_str_is_set() = true
   osmo_sockaddr_str_is_nonzero() = true
-  osmo_sockaddr_str_to_in_addr() rc < 0 in_addr=00000000
+  osmo_sockaddr_str_to_in_addr() rc == -EAFNOSUPPORT in_addr=00000000
   osmo_sockaddr_str_to_in6_addr() rc == 0 in6_addr=ffffffffffffffffffffffffffffffff
    -> osmo_sockaddr_str_from_in6_addr() rc == 0 { .af = AF_INET6, .ip = "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", .port = 65535 }
-  osmo_sockaddr_str_to_32() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
-  osmo_sockaddr_str_to_32h() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32h() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
   osmo_sockaddr_str_to_sockaddr_in() rc == -EINVAL sockaddr_in=00000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr_in6() rc == 0 sockaddr_in6=0a00ffff00000000ffffffffffffffffffffffffffffffff00000000
    -> osmo_sockaddr_str_from_sockaddr_in6() rc == 0 { .af = AF_INET6, .ip = "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", .port = 65535 }
@@ -157,12 +157,12 @@
   OSMO_SOCKADDR_STR_FMT: '[FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF]:65535'
   osmo_sockaddr_str_is_set() = true
   osmo_sockaddr_str_is_nonzero() = true
-  osmo_sockaddr_str_to_in_addr() rc < 0 in_addr=00000000
+  osmo_sockaddr_str_to_in_addr() rc == -EAFNOSUPPORT in_addr=00000000
   osmo_sockaddr_str_to_in6_addr() rc == 0 in6_addr=ffffffffffffffffffffffffffffffff
    -> osmo_sockaddr_str_from_in6_addr() rc == 0 { .af = AF_INET6, .ip = "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", .port = 65535 }
       DIFFERS!
-  osmo_sockaddr_str_to_32() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
-  osmo_sockaddr_str_to_32h() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32h() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
   osmo_sockaddr_str_to_sockaddr_in() rc == -EINVAL sockaddr_in=00000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr_in6() rc == 0 sockaddr_in6=0a00ffff00000000ffffffffffffffffffffffffffffffff00000000
    -> osmo_sockaddr_str_from_sockaddr_in6() rc == 0 { .af = AF_INET6, .ip = "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", .port = 65535 }
@@ -177,10 +177,10 @@
   OSMO_SOCKADDR_STR_FMT: '[::fffff]:1'
   osmo_sockaddr_str_is_set() = true
   osmo_sockaddr_str_is_nonzero() = false
-  osmo_sockaddr_str_to_in_addr() rc < 0 in_addr=00000000
+  osmo_sockaddr_str_to_in_addr() rc == -EAFNOSUPPORT in_addr=00000000
   osmo_sockaddr_str_to_in6_addr() rc == -EINVAL in6_addr=00000000000000000000000000000000
-  osmo_sockaddr_str_to_32() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
-  osmo_sockaddr_str_to_32h() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32h() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
   osmo_sockaddr_str_to_sockaddr_in() rc == -EINVAL sockaddr_in=00000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr_in6() rc == -EINVAL sockaddr_in6=0a000001000000000000000000000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr() rc == -EINVAL sockaddr_storage=0a00000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
@@ -191,10 +191,10 @@
   OSMO_SOCKADDR_STR_FMT: '[not an ip address]:1'
   osmo_sockaddr_str_is_set() = true
   osmo_sockaddr_str_is_nonzero() = false
-  osmo_sockaddr_str_to_in_addr() rc < 0 in_addr=00000000
+  osmo_sockaddr_str_to_in_addr() rc == -EAFNOSUPPORT in_addr=00000000
   osmo_sockaddr_str_to_in6_addr() rc == -EINVAL in6_addr=00000000000000000000000000000000
-  osmo_sockaddr_str_to_32() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
-  osmo_sockaddr_str_to_32h() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32h() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
   osmo_sockaddr_str_to_sockaddr_in() rc == -EINVAL sockaddr_in=00000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr_in6() rc == -EINVAL sockaddr_in6=0a000001000000000000000000000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr() rc == -EINVAL sockaddr_storage=0a00000100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
@@ -205,10 +205,10 @@
   OSMO_SOCKADDR_STR_FMT: '[1.2.3.4]:5'
   osmo_sockaddr_str_is_set() = true
   osmo_sockaddr_str_is_nonzero() = false
-  osmo_sockaddr_str_to_in_addr() rc < 0 in_addr=00000000
+  osmo_sockaddr_str_to_in_addr() rc == -EAFNOSUPPORT in_addr=00000000
   osmo_sockaddr_str_to_in6_addr() rc == -EINVAL in6_addr=00000000000000000000000000000000
-  osmo_sockaddr_str_to_32() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
-  osmo_sockaddr_str_to_32h() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32h() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
   osmo_sockaddr_str_to_sockaddr_in() rc == -EINVAL sockaddr_in=00000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr_in6() rc == -EINVAL sockaddr_in6=0a000005000000000000000000000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr() rc == -EINVAL sockaddr_storage=0a00000500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
@@ -235,10 +235,10 @@
   OSMO_SOCKADDR_STR_FMT: '1.2.3.4:5'
   osmo_sockaddr_str_is_set() = false
   osmo_sockaddr_str_is_nonzero() = false
-  osmo_sockaddr_str_to_in_addr() rc < 0 in_addr=00000000
+  osmo_sockaddr_str_to_in_addr() rc == -EAFNOSUPPORT in_addr=00000000
   osmo_sockaddr_str_to_in6_addr() rc == -EINVAL in6_addr=00000000000000000000000000000000
-  osmo_sockaddr_str_to_32() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
-  osmo_sockaddr_str_to_32h() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32h() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
   osmo_sockaddr_str_to_sockaddr_in() rc == -EINVAL sockaddr_in=00000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr_in6() rc == -EINVAL sockaddr_in6=00000000000000000000000000000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr() rc == -EINVAL sockaddr_storage=0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
@@ -264,10 +264,10 @@
   OSMO_SOCKADDR_STR_FMT: '[]:5'
   osmo_sockaddr_str_is_set() = false
   osmo_sockaddr_str_is_nonzero() = false
-  osmo_sockaddr_str_to_in_addr() rc < 0 in_addr=00000000
+  osmo_sockaddr_str_to_in_addr() rc == -EAFNOSUPPORT in_addr=00000000
   osmo_sockaddr_str_to_in6_addr() rc == -EINVAL in6_addr=00000000000000000000000000000000
-  osmo_sockaddr_str_to_32() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
-  osmo_sockaddr_str_to_32h() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32h() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
   osmo_sockaddr_str_to_sockaddr_in() rc == -EINVAL sockaddr_in=00000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr_in6() rc == -EINVAL sockaddr_in6=0a000005000000000000000000000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr() rc == -EINVAL sockaddr_storage=0a00000500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
@@ -312,12 +312,12 @@
   OSMO_SOCKADDR_STR_FMT: '[::1:10.9.8.7]:1'
   osmo_sockaddr_str_is_set() = true
   osmo_sockaddr_str_is_nonzero() = true
-  osmo_sockaddr_str_to_in_addr() rc < 0 in_addr=00000000
+  osmo_sockaddr_str_to_in_addr() rc == -EAFNOSUPPORT in_addr=00000000
   osmo_sockaddr_str_to_in6_addr() rc == 0 in6_addr=0000000000000000000000010a090807
    -> osmo_sockaddr_str_from_in6_addr() rc == 0 { .af = AF_INET6, .ip = "::1:a09:807", .port = 1 }
       DIFFERS!
-  osmo_sockaddr_str_to_32() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
-  osmo_sockaddr_str_to_32h() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32h() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
   osmo_sockaddr_str_to_sockaddr_in() rc == -EINVAL sockaddr_in=00000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr_in6() rc == 0 sockaddr_in6=0a000001000000000000000000000000000000010a09080700000000
    -> osmo_sockaddr_str_from_sockaddr_in6() rc == 0 { .af = AF_INET6, .ip = "::1:a09:807", .port = 1 }
@@ -351,11 +351,11 @@
   OSMO_SOCKADDR_STR_FMT: '[::]:5'
   osmo_sockaddr_str_is_set() = true
   osmo_sockaddr_str_is_nonzero() = false
-  osmo_sockaddr_str_to_in_addr() rc < 0 in_addr=00000000
+  osmo_sockaddr_str_to_in_addr() rc == -EAFNOSUPPORT in_addr=00000000
   osmo_sockaddr_str_to_in6_addr() rc == 0 in6_addr=00000000000000000000000000000000
    -> osmo_sockaddr_str_from_in6_addr() rc == 0 { .af = AF_INET6, .ip = "::", .port = 5 }
-  osmo_sockaddr_str_to_32() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
-  osmo_sockaddr_str_to_32h() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32h() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
   osmo_sockaddr_str_to_sockaddr_in() rc == -EINVAL sockaddr_in=00000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr_in6() rc == 0 sockaddr_in6=0a000005000000000000000000000000000000000000000000000000
    -> osmo_sockaddr_str_from_sockaddr_in6() rc == 0 { .af = AF_INET6, .ip = "::", .port = 5 }
@@ -368,12 +368,12 @@
   OSMO_SOCKADDR_STR_FMT: '[0::]:5'
   osmo_sockaddr_str_is_set() = true
   osmo_sockaddr_str_is_nonzero() = false
-  osmo_sockaddr_str_to_in_addr() rc < 0 in_addr=00000000
+  osmo_sockaddr_str_to_in_addr() rc == -EAFNOSUPPORT in_addr=00000000
   osmo_sockaddr_str_to_in6_addr() rc == 0 in6_addr=00000000000000000000000000000000
    -> osmo_sockaddr_str_from_in6_addr() rc == 0 { .af = AF_INET6, .ip = "::", .port = 5 }
       DIFFERS!
-  osmo_sockaddr_str_to_32() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
-  osmo_sockaddr_str_to_32h() rc < 0 uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
+  osmo_sockaddr_str_to_32h() rc == -EAFNOSUPPORT uint8_t[4]=[ 00 00 00 00 ]
   osmo_sockaddr_str_to_sockaddr_in() rc == -EINVAL sockaddr_in=00000000000000000000000000000000
   osmo_sockaddr_str_to_sockaddr_in6() rc == 0 sockaddr_in6=0a000005000000000000000000000000000000000000000000000000
    -> osmo_sockaddr_str_from_sockaddr_in6() rc == 0 { .af = AF_INET6, .ip = "::", .port = 5 }