Unsetting a DHCP option in dhcpd.conf(5)

Hi, can an option be unset in a host declaration of dhcpd.conf(5)? I'm trying to set a generic "option routers A.B.C.D" option in a subnet block and disable it in some host blocks. I've already skimmed through dhcpd.conf(5) and dhcp-options(5) man pages, to no avail.

relayd(8) as a plain HTTP proxy?

Hi, can relayd(8) be used as a plain HTTP proxy (no interception, no filtering, SSL/TLS via the CONNECT method)? If it can be used this way, can anyone please a share a config?