Use random source ports where possible if source addresses/interfaces in use. https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=74d4fcd756a85bc1823232ea74334f7ccfb9d5d2 CREATE(Triage):(User=admin) [CVE-2021-3448|https://nvd.nist.gov/vuln/detail/CVE-2021-3448]