Apr 29 08:13:43 tstack-centos5 avahi-daemon[2467]: New relevant interface eth0.IPv4 for mDNS
 key  74:74                                                                           ^                    
 sym  74:83                                                                            ^-------^           eth0.IPv4
pair  74:83                                                                            ^-------^           eth0.IPv4
 key  88:88                                                                                         ^      
 sym  88:92                                                                                          ^--^  mDNS
pair  88:92                                                                                          ^--^  mDNS
msg         :New relevant interface eth0.IPv4 for mDNS
format      :New relevant interface # for #
{
    "col_0": "eth0.IPv4",
    "col_1": "mDNS"
}