FreeBSD's ping Integrates IPv6

Mark Tinka mark at
Mon Jul 5 14:11:43 UTC 2021

On 7/5/21 12:54, Baldur Norddahl wrote:

> Some Juniper gear is Linux hypervisor :-)

Isn't this that Junos Evolved thing? Never played with it :-).

Cisco's "ping" did not need a protocol option before they even had a 
Linux underbelly :-).>ping
Translating ""...domain server (2C0F:FEB0::2) [OK]

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:4998:24:120D::1:0, timeout is 2 
Success rate is 100 percent (5/5), round-trip min/avg/max = 300/303/304 ms>>sh ver | i Cisco
Cisco IOS Software, 7200 Software (C7200P-ADVENTERPRISEK9-M), Version 
15.2(4)S7, RELEASE SOFTWARE (fc4)
Copyright (c) 1986-2015 by Cisco Systems, Inc.
BOOTLDR: Cisco IOS Software, 7200 Software (C7200P-BOOT-M), Version 
12.4(15)T10, RELEASE SOFTWARE (fc3)
use. Delivery of Cisco cryptographic products does not imply
A summary of U.S. laws governing Cisco cryptographic products may be 
found at:
Cisco 7201 (c7201) processor (revision B) with 1966080K/65536K bytes of 

Juniper have also supported "ping" with no options for a while now. I 
can't remember a time when it wasn't the case, but I've only been 
running Junos since release 8.x.

That said, since Junos 17.4R1, hardware-based platforms (including vMX 
and vSRX) have been on FreeBSD-11, which I believe defaults "ping" to 
IPv4 without the Juniper modifications.


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