ping localhost: network unreachable

[Ivailo A. Tanusheff]

Have you altered security configuration of the system - security level or firewall rules.
Most likely this is the case.

For security level check with:
sysctl -n kern.securelevel
If it is not -1, then try to change it and ping the localhost again.

The other option depends on the firewall you use. For example if you use ipfw, in the kernel config you will have:
options    IPFIREWALL			# enables IPFW
And you should put this option:
options    IPFIREWALL_DEFAULT_TO_ACCEPT # sets default policy to pass what is not explicitly denied
if you want to make it run without specifying explicit rules.

If you use ipfilter you may have ibn kernel config:
options IPFILTER
And you should not have without additiobal configuration this:
options IPFILTER_DEFAULT_BLOCK

Hope the above helped you, let us know if this was OK.

Regards,
Ivailo Tanusheff

-----Original Message-----
From: owner-freebsd-questions at freebsd.org [mailto:owner-freebsd-questions at freebsd.org] On Behalf Of Anton Shterenlikht
Sent: Sunday, July 13, 2014 7:28 PM
To: freebsd-questions at freebsd.org
Subject: ping localhost: network unreachable


# ping localhost
capability mode sandbox enabled
PING localhost (127.0.0.1): 56 data bytes
ping: sendto: Network is unreachable
ping: sendto: Network is unreachable
ping: sendto: Network is unreachable
ping: sendto: Network is unreachable

How can I recover from this?

Thanks

Anton
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