28 lines
1.1 KiB
Bash
28 lines
1.1 KiB
Bash
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#!/bin/bash
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# Copyright 2021 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Every 30 seconds, send out an RA so that the kernel will receive a response.
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# This ensures that all BMCs (even ones that think they are routers) get updated
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# information from the other systems on the network.
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w=30
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while true; do
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start=$SECONDS
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rdisc6 -m gbmcbr -r 1 -w $(( w * 1000 )) >/dev/null 2>/dev/null
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# If rdisc6 exits early we still want to wait the full `w` time before
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# starting again.
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(( timeout = start + w - SECONDS ))
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sleep $(( timeout < 0 ? 0 : timeout ))
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done
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