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RDKB-66057: Ensure IPv6 address readiness before restarting manageme… #219

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Merged
S-Parthiban-Selvaraj merged 2 commits into from
Jul 16, 2026
Merged

RDKB-66057: Ensure IPv6 address readiness before restarting manageme… #219

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RDKB-66057: Ensure IPv6 address readiness before restarting manageme…
S-Parthiban-Selvaraj Jul 15, 2026
8f6cc9d
Merge branch 'main' into bugfix/ssh-restart-afterDAD
guto86 Jul 16, 2026
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11 changes: 11 additions & 0 deletions source/WanManager/wanmgr_interface_sm.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1720,6 +1720,17 @@ static int wan_setUpIPv6(WanMgr_IfaceSM_Controller_t * pWanIfaceCtrl)
#endif
}

/* Wait for the newly assigned WAN IPv6 address to complete Duplicate Address
* Detection (i.e. no longer "tentative") before restarting management services.
* On a lease change the address is flushed and re-added, which restarts DAD;
* restarting sshd/dropbear while the address is still tentative makes the bind
* fail with "Cannot assign requested address", leaving reverse SSH IPv4-only. */
if (checkIpv6AddressIsReadyToUse(p_VirtIf) != RETURN_OK)
{
CcspTraceError(("%s %d - IPv6 address not ready (DAD/route) on %s before restarting services\n",
__FUNCTION__, __LINE__, p_VirtIf->Name));
}
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LakshminarayananShenbagaraj marked this conversation as resolved.

/* Restart WAN management services (sshd etc.) so that reverse SSH and other management services (re)bind to the WAN IPv6 address.
* Runs on both first-time bring-up and on a lease/address change. */
wanmgr_services_restart();
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S-Parthiban-Selvaraj marked this conversation as resolved.
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