better error messages if the user tries to use symbolic names such
as "echo" and "echorep" in "ipv6-icmp ... icmp-type ..." rules.
Consider the following rules:
# cat /etc/ipf6.conf
pass in quick proto ipv6-icmp from any to any icmp-type 128
pass in quick proto ipv6-icmp from any to any icmp-type echo
Use of symbolic names give now the following error:
# ipf -Fa -6f /etc/ipf6.conf
2: Unknown ICMPv6 type (echo) specified (use numeric value instead)
The first rule with numeric value will work as expected:
# ipfstat -6hi
0 pass in quick proto ipv6-icmp from any to any icmp-type 128
NOTE: You MUST use numerical values for ICMPv6 types. See
/sys/netinet/icmp6.h for available codes!
c6a4a9d33a