Here's an strace of the segmentation fault, if this helps:
recvfrom(7 0xbfffe5d0 1024 0 0xbfffe5b0 0xbfffe5a
= -1 EAGAIN (Resource temporarily unavailable)
gettimeofday({1016517324 915707} NULL) = 0
recvfrom(7 " ""\22\0\0A\200%\1\31\7!\0\0\0\0\377\377\377\377\36 5\26\365""..." 1024 0 {sin_family=AF_INET sin_port=htons(1440) " sin_addr=inet_addr(""12.232.20.23"")}}" [16]) = 117
nanosleep({0 1000000} 0) = -1 EINTR (Interrupted system call)
--- SIGSEGV (Segmentation fault) ---
+++ killed by SIGSEGV +++