The PoC section doesn't explain the issue. I think a one-line TL;DR similar to the summary above would be best, e.g. "A malicious DHCP server can use DHCP Option 121 to set routing rules, which can override the routing rule used by VPNs and cause traffic to be routed outside the VPN"
(I like it that you provide the background for people who need it, but also found the actually relevant information extremely annoying to find.)
(I like it that you provide the background for people who need it, but also found the actually relevant information extremely annoying to find.)