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Fix UDP send to IPv6 link local addresses #6541

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Merged
merged 2 commits into from
Apr 11, 2020
Merged

Fix UDP send to IPv6 link local addresses #6541

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3aeb851
Fix UDP send to IPv6 link local addresses
nomis Sep 20, 2019
13f0760
Merge branch 'master' into udp-ipv6-linklocal-fix
d-a-v Apr 11, 2020
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6 changes: 6 additions & 0 deletions libraries/ESP8266WiFi/src/include/UdpContext.h
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,12 @@ class UdpContext
{
_pcb->remote_ip = addr;
_pcb->remote_port = port;
#if LWIP_IPV6
// Set zone so that link local addresses use the default interface
if (IP_IS_V6(&_pcb->remote_ip) && ip6_addr_lacks_zone(ip_2_ip6(&_pcb->remote_ip), IP6_UNKNOWN)) {
ip6_addr_assign_zone(ip_2_ip6(&_pcb->remote_ip),IP6_UNKNOWN, netif_default);
}
#endif
return true;
}

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