GSMTAP now creates a locally bound receive socket

Harald Welte laforge at
Sun May 22 19:46:10 UTC 2011


libosmocore >= 0.3.1 and the current osmo-tetra code will now generate
not only the sending GSMTAP UDP socket, but also a locally-bound receive

This avoids the manual start of "nc -l -u -p 4729 >/dev/null" or
iptables rules to drop the UDP packets.

The local receive socket is only created if the GSMTAP IP address is a
locally configured address on any of your network interfaces.  So
sending it to should work well.

Don't be surprised if you happen to see GSMTAP over IPv6, I'm now using
getaddrinfo() and related functions, i.e. "loopback" may now resolve to
::1 instead of

- Harald Welte <laforge at> 
"Privacy in residential applications is a desirable marketing option."
                                                  (ETSI EN 300 175-7 Ch. A6)

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