Configure the NAT-T port via sysctl on Mac OS X to enable handling of incoming UDP encapsulated ESP packets in the kernel.
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@ -34,6 +34,9 @@
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#include <netinet/ip6.h>
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#include <netinet/udp.h>
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#include <net/if.h>
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#ifdef __APPLE__
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#include <sys/sysctl.h>
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#endif
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#include "socket.h"
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@ -611,6 +614,18 @@ socket_t *socket_create()
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this->ipv6 = 0;
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this->ipv4_natt = 0;
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this->ipv6_natt = 0;
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#ifdef __APPLE__
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{
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int natt_port = IKEV2_NATT_PORT;
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if (sysctlbyname("net.inet.ipsec.esp_port", NULL, NULL, &natt_port,
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sizeof(natt_port)) != 0)
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{
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DBG1(DBG_NET, "could not set net.inet.ipsec.esp_port to %d: %s",
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natt_port, strerror(errno));
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}
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}
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#endif
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this->ipv4 = open_socket(this, AF_INET, IKEV2_UDP_PORT);
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if (this->ipv4 == 0)
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