[Beryl MT1300 4.3.25] Captive portal detection fails - Connecting with Beryl resulted in no redirect, connecting with devices did

Routers
8

A TTL of 128 will spoof the default on a Windows machine. 64 is typical of OSX & Linux:

uci batch <<- __EOF
	add firewall rule
	rename firewall.@rule[-1]='custom_ttl'
	set firewall.custom_ttl.name='Set TTL to 128'
	set firewall.custom_ttl.src='wan'
	set firewall.custom_ttl.proto='ip'
	set firewall.custom_ttl.target='ACCEPT'
	set firewall.custom_ttl.ttl='128'
	reorder firewall.custom_ttl='1'
	set firewall.custom_ttl.enabled='1'
__EOF
uci commit firewall && service firewall restart
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