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| 1 # Configure the MTU for the interface | |
| 2 | |
| 3 mtu_dir="$state_dir/mtu" | |
| 4 | |
| 5 if [ "$reason" = PREINIT -a -e "$mtu_dir/$interface" ]; then | |
| 6 rm "$mtu_dir/$interface" | |
| 7 elif [ "$reason" != TEST -a -n "$new_interface_mtu" ]; then | |
| 8 # The smalled MTU dhcpcd can work with is 576 | |
| 9 if [ "$new_interface_mtu" -ge 576 ]; then | |
| 10 if ifconfig "$interface" mtu "$new_interface_mtu"; then | |
| 11 syslog info "$interface: MTU set to $new_interface_mtu" | |
| 12 # Save the MTU so we can restore it later | |
| 13 if [ ! -e "$mtu_dir/$interface" ]; then | |
| 14 mkdir -p "$mtu_dir" | |
| 15 echo "$ifmtu" > "$mtu_dir/$interface" | |
| 16 fi | |
| 17 fi | |
| 18 fi | |
| 19 elif [ "$reason" != TEST -a -e "$mtu_dir/$interface" ]; then | |
| 20 # No MTU in this state, so restore the prior MTU | |
| 21 mtu=$(cat "$mtu_dir/$interface") | |
| 22 syslog info "$interface: MTU restored to $mtu" | |
| 23 ifconfig "$interface" mtu "$mtu" | |
| 24 rm "$mtu_dir/$interface" | |
| 25 fi | |
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