kern/53037: tunnel mode for gif(4) manpage

[kab00m%labma.ru@localhost]

>Number:         53037
>Category:       kern
>Synopsis:       tunnel mode for gif(4) manpage
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          doc-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Feb 18 15:45:00 +0000 2018
>Originator:     Dima Veselov
>Release:        NetBSD 7.1_STABLE
>Organization:
	
>Environment:
	
	
System: NetBSD loki.labma.ru 5.1_STABLE NetBSD 5.1_STABLE (Georn) #0: Wed Jun 13 04:33:08 MSK 2012 kab00m%loki.labma.ru@localhost:/usr/obj/sys/arch/amd64/compile/Georn amd64
Architecture: x86_64
Machine: amd64
>Description:
	In gif(4) manpage (on cisco side) 'tunnel mode ipip' should be added,
	otherwise this will not work
>How-To-Repeat:
	
>Fix:
	On Host D (Cisco):

        Interface TunnelX
         ip unnumbered D   ! e.g. address from Ethernet interface
         tunnel source D   ! e.g. address from Ethernet interface
         tunnel destination A
	 tunnel mode ipip
        ip route C <some interface and mask>
        ip route A mask C
        ip route X mask tunnelX

>Unformatted: