Provided by: systemtap-doc_2.3-1ubuntu1.4_all 

NAME
function::format_ipaddr - Returns a string representation for an IP address
SYNOPSIS
format_ipaddr:string(addr:long,family:long)
ARGUMENTS
addr
the IP address
family
the IP address family (either AF_INET or AF_INET6)
SystemTap Tapset Reference March 2016 FUNCTION::FORMAT_IPA(3stap)