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Clear any existing IP before sending a DHCP request (#2979)

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Fixes #2978
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Earle F. Philhower, III 2025-05-31 11:20:14 -07:00 committed by GitHub
parent 73bd6a0891
commit 948e9bfd22
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GPG key ID: B5690EEEBB952194
1 changed files with 4 additions and 1 deletions
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5
libraries/lwIP_Ethernet/src/LwipIntfDev.h
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@ -393,7 +393,10 @@ bool LwipIntfDev<RawDev>::begin(const uint8_t* macAddress, const uint16_t mtu) {
} }
if (_isDHCP) { if (_isDHCP) {
// IP not set, starting DHCP // Destroy any existing address
ip4_addr_set_u32(ip_2_ip4(&_netif.ip_addr), 0);
// Start a new DHCP request
_netif.flags |= NETIF_FLAG_UP; _netif.flags |= NETIF_FLAG_UP;
switch (dhcp_start(&_netif)) { switch (dhcp_start(&_netif)) {
case ERR_OK: case ERR_OK: