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fix(build): allow /31 and /32 CIDR with out-of-subnet gateway (#13231)

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CanbiZ (MickLesk) 2026-03-23 20:41:55 +01:00 • committed by GitHub
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misc/build.func
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@ -529,6 +529,10 @@ validate_gateway_in_subnet() {
local ip="${static_ip%%/*}"
local cidr="${static_ip##*/}"
# /31 and /32 are valid point-to-point / zero-trust DMZ configurations
# where the gateway is technically outside the subnet — skip validation
((cidr >= 31)) && return 0
# Convert CIDR to netmask bits
local mask=$((0xFFFFFFFF << (32 - cidr) & 0xFFFFFFFF))