accept_redirects

file: /proc/sys/net/ipv6/conf/interface/accept_redirects
variable: net.ipv6.conf.interface.accept_redirects
Official reference

Accept Redirects.

Functional default: enabled if local forwarding is disabled. disabled if local forwarding is enabled.

Nb: per interface setting (where “interface” is the name of your network interface); “all” is a special interface: changes the settings for all interfaces.

source