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If the MTU is being set by DHCP, we can override that with some changes to /etc/dhcp/dhclient.conf ```option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;send host-name = gethostname();#added these two lines before the request linedefault interface-mtu 1500;supercede interface-mtu 1500;request subnet-mask, broadcast-address, time-offset, routers, domain-name, domain-name-servers, domain-search, host-name, dhcp6.name-servers, dhcp6.domain-search, netbios-name-servers, netbios-scope, interface-mtu, rfc3442-classless-static-routes, ntp-servers, dhcp6.fqdn, dhcp6.sntp-servers; ```