taglinefilesource code
err_handler39include/net/protocol.hvoid      (*err_handler)(int err, unsigned char *buff,
err_handler417net/ipv4/icmp.cif (iph->protocol == ipprot->protocol && ipprot->err_handler) 
err_handler419net/ipv4/icmp.cipprot->err_handler(err, (unsigned char *)(icmph + 1),