prevent /etc/resolv.conf from overwritten by dhcpcd

yufw · n00b Joined: 11 Nov 2013 Posts: 57

I use pptpclient to connect to VPN, since I have enabled the 'usepeerdns' option for pptpclient, when the ppp0 interface is on, it will copy /etc/ppp/resolv.conf to /etc/resolv.conf. However, every several hours or so, /etc/resolv.conf gets overwritten by dhcpcd.

I want to use the peer supplied DNS when I connect to VPN, so how to prevent /etc/resolv.conf from overwritten by dhcpcd?

saivinoba · n00b Joined: 20 May 2014 Posts: 30

I don't know if I understand the problem but will disabling dhcpcd help?

ulenrich · Veteran Joined: 10 Oct 2010 Posts: 1480

Jaglover · Posted: Sun Jul 06, 2014 6:24 pm Post subject:

DHCP clients can be configured to do certain tasks only. Disable pulling DNS and it will not overwrite your resolv.conf.
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szatox · Advocate Joined: 27 Aug 2013 Posts: 3134

If you're happy with completly static resolv.conf, you can `chattr +i /etc/resolv.conf`
I don't say this solution is perfect, but it's fast, generic, and contents of that file will not change, no matter what, until you remove this flag.

khayyam · Posted: Sun Jul 06, 2014 7:18 pm Post subject:

yufw ....

simply configure dhcpcd to not run the resolv.conf 'hook'

/etc/dhcpcd.conf

yufw · n00b Joined: 11 Nov 2013 Posts: 57

Thank you all for so many replies. I think I will take khay's advice because it is the most natural solution to me.

UberLord · Posted: Mon Jul 07, 2014 5:41 pm Post subject:

I propose another solution - resolvconf to manage this for you, assuming your VPN supports it.

openresolv is an implementation in Gentoo.
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