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LWIP::get_ip_addr: Prefer IPv4 over IPv6 link local addresses #161

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May 23, 2023
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LWIP::get_ip_addr: Prefer IPv4 over IPv6 link local addresses #161

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9 changes: 3 additions & 6 deletions connectivity/lwipstack/source/lwip_tools.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -110,12 +110,6 @@ const ip_addr_t *LWIP::get_ipv6_addr(const struct netif *netif)
return netif_ip_addr6(netif, i);
}
}

for (int i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++) {
if (ip6_addr_isvalid(netif_ip6_addr_state(netif, i))) {
return netif_ip_addr6(netif, i);
}
}
#endif
return NULL;
}
Expand Down Expand Up @@ -164,6 +158,9 @@ const ip_addr_t *LWIP::get_ip_addr(bool any_addr, const struct netif *netif)
pref_ip_addr = get_ipv6_addr(netif);
npref_ip_addr = get_ipv4_addr(netif);
#endif
if (!npref_ip_addr) {
npref_ip_addr = get_ipv6_link_local_addr(netif);
}
#elif LWIP_IPV6
pref_ip_addr = get_ipv6_addr(netif);
#elif LWIP_IPV4
Expand Down