OsmoHLR> enable
OsmoHLR# subscriber imsi 111111111111111 create
...
OsmoHLR# subscriber id 1 update imsi-pseudo alloc
% New pseudonymous IMSI allocated: 111111111111111
OsmoHLR# subscriber imsi 222222222222222 create
...
OsmoHLR# subscriber id 1 update imsi-pseudo alloc
% New pseudonymous IMSI allocated: 222222222222222
OsmoHLR# subscriber id 1 update imsi-pseudo dealloc 111111111111111
OsmoHLR# subscriber id 2 update imsi-pseudo alloc
% New pseudonymous IMSI allocated: 111111111111111
OsmoHLR# subscriber imsi 333333333333333 create
...
OsmoHLR# subscriber id 1 update imsi-pseudo alloc
% New pseudonymous IMSI allocated: 333333333333333
OsmoHLR# subscriber id 1 show
    ID: 1
    IMSI: 111111111111111
    Pseudonymous IMSI (current): 333333333333333, i: 3
    Pseudonymous IMSI (previous): 222222222222222
    MSISDN: none
OsmoHLR# subscriber id 2 show
    ID: 2
    IMSI: 222222222222222
    Pseudonymous IMSI (current): 111111111111111, i: 1
    MSISDN: none
OsmoHLR# subscriber id 3 show
    ID: 3
    IMSI: 333333333333333
    MSISDN: none

OsmoHLR# subscriber id 3 update imsi-pseudo alloc
% Error: all IMSIs are already allocated as pseudonymous IMSI

OsmoHLR# subscriber id 1 update imsi-pseudo dealloc 123
% Error: pseudonymous IMSI '123' is not allocated to given subscriber

OsmoHLR# subscriber imsi 444444444444444 create
...
OsmoHLR# subscriber id 1 update imsi-pseudo alloc
% Error: subscriber already has two pseudonymous IMSI allocated