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fix(dhcp): can not renew an ip address

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The dhcp server is systemd-networkd, and the dhcp
plugin can request an ip but can not renew it.
The systemd-networkd just ignore the renew request.

```
2024/09/14 21:46:00 no DHCP packet received within 10s
2024/09/14 21:46:00 retrying in 31.529038 seconds
2024/09/14 21:46:42 no DHCP packet received within 10s
2024/09/14 21:46:42 retrying in 63.150490 seconds
2024/09/14 21:47:45 98184616c91f15419f5cacd012697f85afaa2daeb5d3233e28b0ec21589fb45a/iot/eth1: no more tries
2024/09/14 21:47:45 98184616c91f15419f5cacd012697f85afaa2daeb5d3233e28b0ec21589fb45a/iot/eth1: renewal time expired, rebinding
2024/09/14 21:47:45 Link "eth1" down. Attempting to set up
2024/09/14 21:47:45 98184616c91f15419f5cacd012697f85afaa2daeb5d3233e28b0ec21589fb45a/iot/eth1: lease rebound, expiration is 2024-09-14 22:47:45.309270751 +0800 CST m=+11730.048516519
```

Follow the https://datatracker.ietf.org/doc/html/rfc2131#section-4.3.6,
following options must not be sent in renew

- Requested IP Address
- Server Identifier

Since the upstream code has been inactive for 6 years,
we should switch to another dhcpv4 library.
The new selected one is https://github.com/insomniacslk/dhcp.

Signed-off-by: Songmin Li <lisongmin@protonmail.com>
This commit is contained in:
Songmin Li
2024-09-14 22:00:20 +08:00
committed by Casey Callendrello
parent e4950728ce
commit d61e7e5e1f
310 changed files with 12785 additions and 11182 deletions
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33
vendor/github.com/mdlayher/packet/packet_others.go generated vendored Normal file
View File

@ -0,0 +1,33 @@
//go:build !linux
// +build !linux
package packet
import (
"fmt"
"net"
"runtime"
"syscall"
"time"
"golang.org/x/net/bpf"
)
// errUnimplemented is returned by all functions on non-Linux platforms.
var errUnimplemented = fmt.Errorf("packet: not implemented on %s", runtime.GOOS)
func listen(_ *net.Interface, _ Type, _ int, _ *Config) (*Conn, error) { return nil, errUnimplemented }
func (*Conn) readFrom(_ []byte) (int, net.Addr, error) { return 0, nil, errUnimplemented }
func (*Conn) writeTo(_ []byte, _ net.Addr) (int, error) { return 0, errUnimplemented }
func (*Conn) setPromiscuous(_ bool) error { return errUnimplemented }
func (*Conn) stats() (*Stats, error) { return nil, errUnimplemented }
type conn struct{}
func (*conn) Close() error { return errUnimplemented }
func (*conn) SetDeadline(_ time.Time) error { return errUnimplemented }
func (*conn) SetReadDeadline(_ time.Time) error { return errUnimplemented }
func (*conn) SetWriteDeadline(_ time.Time) error { return errUnimplemented }
func (*conn) SetBPF(_ []bpf.RawInstruction) error { return errUnimplemented }
func (*conn) SyscallConn() (syscall.RawConn, error) { return nil, errUnimplemented }