bridge: Restart queries when last querier expires
As it stands when we discover that a real querier (one that queries with a non-zero source address) we stop querying. However, even after said querier has fallen off the edge of the earth, we will never restart querying (unless the bridge itself is restarted). This patch fixes this by kicking our own querier into gear when the timer for other queriers expire. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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