Split off legacy/trac#19960: It is ok for the log message generated by address/get_if_addrs6_list_no_internal to be either: * "connect() failed", or * "unable to create socket", or * "Address that we determined via UDP socket magic is unsuitable for public comms." But we don't currently allow the third option. ``` address/get_if_addrs6_list_no_internal: [forking] FAIL src/test/test_address.c:850: expected log to contain "connect() failed" o r "unable to create socket" Captured logs: 1. err: "Address that we determined via UDP socket magic is unsuitable for p ublic comms.\n" [get_if_addrs6_list_no_internal FAILED] ```