default message code is None - hard fail, and add a __str__ function to it
default message code is None - hard fail, and add a __str__ function to it

blablacar/exabgp,chrisy/exabgp,lochiiconnectivity/exabgp,earies/exabgp,chrisy/exabgp,benagricola/exabgp,PowerDNS/exabgp,benagricola/exabgp,PowerDNS/exabgp,lochiiconnectivity/exabgp,benagricola/exabgp,blablacar/exabgp,earies/exabgp,blablacar/exabgp,lochiiconnectivity/exabgp,fugitifduck/exabgp,fugitifduck/exabgp,chrisy/exabgp,dneiter/exabgp,fugitifduck/exabgp,PowerDNS/exabgp,dneiter/exabgp,earies/exabgp,dneiter/exabgp