Revert "Linux optimizations for subnet routers and exit nodes"

tailscale/Dockerfile

@@ -10,7 +10,6 @@ ARG BUILD_ARCH=amd64
 ARG TAILSCALE_VERSION="v1.66.4"
 RUN \
     apk add --no-cache \
-        ethtool=6.6-r0 \
         ipcalc=1.0.3-r0 \
         iproute2=6.6.0-r0 \
         iptables=1.8.10-r3 \

tailscale/rootfs/etc/s6-overlay/s6-rc.d/post-tailscaled/run

@@ -4,7 +4,6 @@
 # Home Assistant Community Add-on: Tailscale
 # Runs after the machine has been logged in into the Tailscale network
 # ==============================================================================
-declare interface
 declare -a options
 declare -a routes=()
 declare route
@@ -13,20 +12,6 @@ declare login_server
 declare tags
 declare keyexpiry
 
-# Linux optimizations for subnet routers and exit nodes
-# Based on: https://tailscale.com/kb/1320/performance-best-practices#linux-optimizations-for-subnet-routers-and-exit-nodes
-# Note: Changes made via ethtool are not persistent and will be lost after the machine shuts down
-# Note: Executing it before "tailscale up" to avoid warning messages
-for interface in $( \
-  { ip -4 route show 0/0; ip -6 route show ::/0; } \
-  | { grep -E '^default\svia\s\S+\sdev\s\S+' || true ;} \
-  | cut -f5 -d' ' \
-  | sort -u)
-do
-  bashio::log.info "Allow UDP GRO for forwarding on ${interface}"
-  ethtool -K "${interface}" rx-udp-gro-forwarding on rx-gro-list off
-done
-
 # Default options
 options+=(--hostname "$(bashio::info.hostname)")