FreeBSD's ping Integrates IPv6

Niels Bakker niels=nanog at
Fri Jul 2 17:13:54 UTC 2021

>>I just noticed (although it appears to have come in version 13.0) 
>>that FreeBSD's "ping" app now defaults to IPv6, i.e., no need for 

* randy at (Randy Bush) [Fri 02 Jul 2021, 18:48 CEST]:
>pola breakage.  especially fun if you have tools which run on both 
>sides of the koolaid.

On the one hand, yes. On the other hand, Linux had already made this 
change for ping specifically. Almost all other tools you'd use 
regularly are dual-stack by default that follow what's configured for 
the system to prefer (for FreeBSD that's ip6addrctl_policy): tools 
like telnet, ssh, mtr all follow the system default with -4 and -6 
command-line options to override the default if situationally needed. 
ping and traceroute were the only odd ones out, and now only 
traceroute is. I think this was an unavoidable change worth the 
temporary discomfort while tools using these tools are adjusted.

	-- Niels.

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