DHCP client rewrites resolv.conf

General questions
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1

I get an IP address on the WAN interface (eth0) from my ISP via DHCP. I set up an ipsec tunnel and get the DNS server address from the VPN server. Strongswan adds DNS addresses to resolv.conf:

nameserver 100.100.1.1   # by strongSwan
### Autogenerated by VyOS ###
### Do not edit, your changes will get overwritten ###

# dhcp-eth0
nameserver 192.168.20.1

Everything works fine until the DHCP client rewrites resolv.conf when renewing the address. This breaks the resolving. How to prevent the file from being overwritten?

2

Try
set interfaces ethernet eth0 dhcp-options ?
to see if an option exist to ignore the DNS setting received by DHCP

3

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