macvlan: dhcp proxy not reaching server running on host

I get the following error when starting a container on a macvlan network with the dhcp ipam driver:
`netavark: unable to obtain lease: dhcp proxy error: status: Aborted, message: "Timeout: Timeout"`
The server is running on the host and is reachable from a container using a macvlan network with the host-local driver.

### Steps to reproduce
```
$ ip a
...
2: enp4s0: mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 00:0e:2e:2c:c6:77 brd ff:ff:ff:ff:ff:ff
...
7: mvlan@enp4s0: mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 56:a1:e4:16:c2:b9 brd ff:ff:ff:ff:ff:ff
inet 192.168.4.1/24 brd 192.168.4.255 scope global mvlan
valid_lft forever preferred_lft forever
$ podman network create dhcp -d macvlan -o parent=enp4s0 --ipam-driver=dhcp
dhcp
$ podman network create host-local -d macvlan -o parent=enp4s0 --ipam-driver=host-local --ip-range 192.168.4.10-192.168.4.20 --subnet 192.168.4.0/24
host-local
$ podman run --network dhcp --privileged alpine:latest udhcpc
Error: netavark: unable to obtain lease: dhcp proxy error: status: Aborted, message: "Timeout: Timeout", details: [], metadata: MetadataMap { headers: {"content-type": "application/grpc", "date": "Tue, 18 Jun 2024 11:43:09 GMT", "content-length": "0"} }
$ podman run --network host-local --privileged alpine:latest udhcpc
udhcpc: started, v1.36.1
udhcpc: broadcasting discover
udhcpc: broadcasting select for 192.168.4.109, server 192.168.4.1
udhcpc: lease of 192.168.4.109 obtained from 192.168.4.1, lease time 3600
```

Here are package dumps of the above run for both the macvlan and the underlying device.
The request of the dhcp proxy only shows up on the underlying device.

[enp4s0.pcap](https://github.com/user-attachments/files/15886365/enp4s0.pcap.txt)
[mvlan.pcap](https://github.com/user-attachments/files/15886335/mvlan.pcap.txt)

### Configuration
```
$ podman info
host:
arch: amd64
buildahVersion: 1.36.0
cgroupControllers:
- cpuset
- cpu
- io
- memory
- hugetlb
- pids
- rdma
- misc
cgroupManager: systemd
cgroupVersion: v2
conmon:
package: /usr/bin/conmon is owned by conmon 1:2.1.12-1
path: /usr/bin/conmon
version: 'conmon version 2.1.12, commit: e8896631295ccb0bfdda4284f1751be19b483264'
cpuUtilization:
idlePercent: 98.73
systemPercent: 0.39
userPercent: 0.88
cpus: 4
databaseBackend: sqlite
distribution:
distribution: arch
version: unknown
eventLogger: journald
freeLocks: 2020
hostname: chef
idMappings:
gidmap: null
uidmap: null
kernel: 6.9.2-arch1-1
linkmode: dynamic
logDriver: journald
memFree: 542154752
memTotal: 8190984192
networkBackend: netavark
networkBackendInfo:
backend: netavark
dns:
package: /usr/lib/podman/aardvark-dns is owned by aardvark-dns 1.11.0-1
path: /usr/lib/podman/aardvark-dns
version: aardvark-dns 1.11.0
package: /usr/lib/podman/netavark is owned by netavark 1.11.0-2
path: /usr/lib/podman/netavark
version: netavark 1.11.0
ociRuntime:
name: crun
package: /usr/bin/crun is owned by crun 1.15-1
path: /usr/bin/crun
version: |-
crun version 1.15
commit: e6eacaf4034e84185fd8780ac9262bbf57082278
rundir: /run/crun
spec: 1.0.0
+SYSTEMD +SELINUX +APPARMOR +CAP +SECCOMP +EBPF +CRIU +YAJL
os: linux
pasta:
executable: /usr/bin/pasta
package: /usr/bin/pasta is owned by passt 2024_06_07.8a83b53-1
version: |
pasta 2024_06_07.8a83b53
Copyright Red Hat
GNU General Public License, version 2 or later

This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
remoteSocket:
exists: true
path: /run/podman/podman.sock
rootlessNetworkCmd: pasta
security:
apparmorEnabled: false
capabilities: CAP_CHOWN,CAP_DAC_OVERRIDE,CAP_FOWNER,CAP_FSETID,CAP_KILL,CAP_NET_BIND_SERVICE,CAP_SETFCAP,CAP_SETGID,CAP_SETPCAP,CAP_SETUID,CAP_SYS_CHROOT
rootless: false
seccompEnabled: true
seccompProfilePath: /etc/containers/seccomp.json
selinuxEnabled: false
serviceIsRemote: false
slirp4netns:
executable: ""
package: ""
version: ""
swapFree: 8589144064
swapTotal: 8589930496
uptime: 23h 48m 41.00s (Approximately 0.96 days)
variant: ""
plugins:
authorization: null
log:
- k8s-file
- none
- passthrough
- journald
network:
- bridge
- macvlan
- ipvlan
volume:
- local
registries: {}
store:
configFile: /etc/containers/storage.conf
containerStore:
number: 3
paused: 0
running: 0
stopped: 3
graphDriverName: overlay
graphOptions:
overlay.mountopt: nodev
graphRoot: /var/lib/containers/storage
graphRootAllocated: 493409042432
graphRootUsed: 183902281728
graphStatus:
Backing Filesystem: extfs
Native Overlay Diff: "false"
Supports d_type: "true"
Supports shifting: "true"
Supports volatile: "true"
Using metacopy: "true"
imageCopyTmpDir: /var/tmp
imageStore:
number: 13
runRoot: /run/containers/storage
transientStore: false
volumePath: /var/lib/containers/storage/volumes
version:
APIVersion: 5.1.1
Built: 1717539130
BuiltTime: Wed Jun 5 00:12:10 2024
GitCommit: bda6eb03dcbcf12a5b7ae004c1240e38dd056d24-dirty
GoVersion: go1.22.3
Os: linux
OsArch: linux/amd64
Version: 5.1.1
```

#### systemd-networkd configuration:
mvlan.netdev
```
[NetDev]
Name=mvlan
Kind=macvlan

[MACVLAN]
Mode=bridge
```
mvlan.network
```
[Match]
Name=mvlan

[Network]
Address=192.168.4.1/24
DHCPServer=true

[DHCPServer]
PoolOffset=100
PoolSize=20
EmitDNS=yes
DNS=9.9.9.9
```
enp4s0.network
```
[Match]
Name=enp4s0
[Network]
MACVLAN=mvlan
DHCP=no
IPv6AcceptRA=false
LinkLocalAddressing=no
MulticastDNS=false
LLMNR=false
```