| William A. Kennington III | 2461556 | 2021-04-26 14:10:52 -0700 | [diff] [blame] | 1 | #!/bin/bash |
| 2 | # Copyright 2021 Google LLC |
| 3 | # |
| 4 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | # you may not use this file except in compliance with the License. |
| 6 | # You may obtain a copy of the License at |
| 7 | # |
| 8 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | # |
| 10 | # Unless required by applicable law or agreed to in writing, software |
| 11 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | # See the License for the specific language governing permissions and |
| 14 | # limitations under the License. |
| 15 | |
| 16 | # Every 30 seconds, send out an RA so that the kernel will receive a response. |
| 17 | # This ensures that all BMCs (even ones that think they are routers) get updated |
| 18 | # information from the other systems on the network. |
| 19 | w=30 |
| 20 | while true; do |
| 21 | start=$SECONDS |
| 22 | rdisc6 -m gbmcbr -r 1 -w $(( w * 1000 )) >/dev/null 2>/dev/null |
| 23 | # If rdisc6 exits early we still want to wait the full `w` time before |
| 24 | # starting again. |
| 25 | (( timeout = start + w - SECONDS )) |
| 26 | sleep $(( timeout < 0 ? 0 : timeout )) |
| 27 | done |