I have a similar issue. The lxd container has no ip address if the machine use bonding interfaces.

~$ sudo lxc list
+---------------------+---------+------+------+------------+-----------+
|        NAME         |  STATE  | IPV4 | IPV6 |    TYPE    | SNAPSHOTS |
+---------------------+---------+------+------+------------+-----------+
| juju-abc723-2-lxd-0 | RUNNING |      |      | PERSISTENT | 0         |
+---------------------+---------+------+------+------------+-----------+

~$ sudo lxc exec juju-abc723-2-lxd-0 ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
34: eth5@if35: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UP group default qlen 1000
    link/ether 00:16:3e:1b:14:8a brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::216:3eff:fe1b:148a/64 scope link tentative dadfailed 
       valid_lft forever preferred_lft forever
36: eth1@if37: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 00:16:3e:e2:2b:e1 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::216:3eff:fee2:2be1/64 scope link tentative dadfailed 
       valid_lft forever preferred_lft forever
38: eth0@if39: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UP group default qlen 1000
    link/ether 00:16:3e:44:5b:36 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::216:3eff:fe44:5b36/64 scope link tentative dadfailed 
       valid_lft forever preferred_lft forever
40: eth2@if41: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 00:16:3e:a1:71:27 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::216:3eff:fea1:7127/64 scope link tentative dadfailed 
       valid_lft forever preferred_lft forever
42: eth3@if43: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 00:16:3e:c4:82:3f brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::216:3eff:fec4:823f/64 scope link tentative dadfailed 
       valid_lft forever preferred_lft forever
44: eth4@if45: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UP group default qlen 1000
    link/ether 00:16:3e:aa:b4:99 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::216:3eff:feaa:b499/64 scope link tentative dadfailed 
       valid_lft forever preferred_lft forever

~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 9000 qdisc mq master bond0 state UP group default qlen 1000
    link/ether 94:57:a5:5c:e7:38 brd ff:ff:ff:ff:ff:ff
3: eno49: <NO-CARRIER,BROADCAST,MULTICAST,SLAVE,UP> mtu 1500 qdisc mq master bond1 state DOWN group default qlen 1000
    link/ether 5c:b9:01:96:f4:8c brd ff:ff:ff:ff:ff:ff
4: eno2: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 9000 qdisc mq master bond0 state UP group default qlen 1000
    link/ether 94:57:a5:5c:e7:38 brd ff:ff:ff:ff:ff:ff
5: eno50: <NO-CARRIER,BROADCAST,MULTICAST,SLAVE,UP> mtu 1500 qdisc mq master bond1 state DOWN group default qlen 1000
    link/ether 5c:b9:01:96:f4:8c brd ff:ff:ff:ff:ff:ff
6: eno3: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 9000 qdisc mq master bond0 state UP group default qlen 1000
    link/ether 94:57:a5:5c:e7:38 brd ff:ff:ff:ff:ff:ff
7: eno4: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 9000 qdisc mq master bond0 state UP group default qlen 1000
    link/ether 94:57:a5:5c:e7:38 brd ff:ff:ff:ff:ff:ff
8: eno51: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
    link/ether 5c:b9:01:96:f4:8e brd ff:ff:ff:ff:ff:ff
9: eno52: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
    link/ether 5c:b9:01:96:f4:8f brd ff:ff:ff:ff:ff:ff
18: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 9000 qdisc noqueue master br-bond0 state UP group default qlen 1000
    link/ether 94:57:a5:5c:e7:38 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::9657:a5ff:fe5c:e738/64 scope link 
       valid_lft forever preferred_lft forever
19: br-bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UP group default qlen 1000
    link/ether 94:57:a5:5c:e7:38 brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.4/24 brd 192.168.2.255 scope global br-bond0
       valid_lft forever preferred_lft forever
    inet6 fe80::9657:a5ff:fe5c:e738/64 scope link 
       valid_lft forever preferred_lft forever
20: bond0.1501@bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-bond0.1501 state UP group default qlen 1000
    link/ether fe:64:bb:4d:2d:3c brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fc64:bbff:fe4d:2d3c/64 scope link 
       valid_lft forever preferred_lft forever
21: br-bond0.1501: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether fe:64:bb:4d:2d:3c brd ff:ff:ff:ff:ff:ff
    inet 10.15.1.4/24 brd 10.15.1.255 scope global br-bond0.1501
       valid_lft forever preferred_lft forever
    inet6 fe80::fc64:bbff:fe4d:2d3c/64 scope link 
       valid_lft forever preferred_lft forever
22: bond0.1502@bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-bond0.1502 state UP group default qlen 1000
    link/ether fe:64:bb:4d:2d:3c brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fc64:bbff:fe4d:2d3c/64 scope link 
       valid_lft forever preferred_lft forever
23: br-bond0.1502: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether fe:2e:10:ee:c9:93 brd ff:ff:ff:ff:ff:ff
    inet 10.15.2.4/24 brd 10.15.2.255 scope global br-bond0.1502
       valid_lft forever preferred_lft forever
    inet6 fe80::fc64:bbff:fe4d:2d3c/64 scope link 
       valid_lft forever preferred_lft forever
24: bond0.1503@bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-bond0.1503 state UP group default qlen 1000
    link/ether fe:64:bb:4d:2d:3c brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fc64:bbff:fe4d:2d3c/64 scope link 
       valid_lft forever preferred_lft forever
25: br-bond0.1503: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether fe:64:bb:4d:2d:3c brd ff:ff:ff:ff:ff:ff
    inet 10.15.3.4/24 brd 10.15.3.255 scope global br-bond0.1503
       valid_lft forever preferred_lft forever
    inet6 fe80::fc64:bbff:fe4d:2d3c/64 scope link 
       valid_lft forever preferred_lft forever
26: bond0.1504@bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue master br-bond0.1504 state UP group default qlen 1000
    link/ether fe:64:bb:4d:2d:3c brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fc64:bbff:fe4d:2d3c/64 scope link 
       valid_lft forever preferred_lft forever
27: br-bond0.1504: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UP group default qlen 1000
    link/ether fe:64:bb:4d:2d:3c brd ff:ff:ff:ff:ff:ff
    inet 10.15.4.4/24 brd 10.15.4.255 scope global br-bond0.1504
       valid_lft forever preferred_lft forever
    inet6 fe80::fc64:bbff:fe4d:2d3c/64 scope link 
       valid_lft forever preferred_lft forever
28: bond0.1505@bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue master br-bond0.1505 state UP group default qlen 1000
    link/ether fe:64:bb:4d:2d:3c brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fc64:bbff:fe4d:2d3c/64 scope link 
       valid_lft forever preferred_lft forever
29: br-bond0.1505: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UP group default qlen 1000
    link/ether fe:64:bb:4d:2d:3c brd ff:ff:ff:ff:ff:ff
    inet 10.15.5.4/24 brd 10.15.5.255 scope global br-bond0.1505
       valid_lft forever preferred_lft forever
    inet6 fe80::fc64:bbff:fe4d:2d3c/64 scope link 
       valid_lft forever preferred_lft forever
30: bond0.1506@bond0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether fe:64:bb:4d:2d:3c brd ff:ff:ff:ff:ff:ff
    inet6 fe80::fc64:bbff:fe4d:2d3c/64 scope link 
       valid_lft forever preferred_lft forever
31: bond1: <NO-CARRIER,BROADCAST,MULTICAST,MASTER,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 5c:b9:01:96:f4:8c brd ff:ff:ff:ff:ff:ff
33: lxdbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000
    link/ether be:fc:14:75:b3:14 brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.1/24 scope global lxdbr0
       valid_lft forever preferred_lft forever
    inet6 fe80::bcfc:14ff:fe75:b314/64 scope link 
       valid_lft forever preferred_lft forever
35: veth1STP32@if34: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue master br-bond0.1505 state UP group default qlen 1000
    link/ether fe:84:f6:4b:0d:c9 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::fc84:f6ff:fe4b:dc9/64 scope link 
       valid_lft forever preferred_lft forever
37: vethNUI4TG@if36: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-bond0.1501 state UP group default qlen 1000
    link/ether fe:ce:0c:f9:38:25 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::fcce:cff:fef9:3825/64 scope link 
       valid_lft forever preferred_lft forever
39: vethFQVIKS@if38: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue master br-bond0 state UP group default qlen 1000
    link/ether fe:2c:48:37:cc:a1 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::fc2c:48ff:fe37:cca1/64 scope link 
       valid_lft forever preferred_lft forever
41: vethE0JNXS@if40: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-bond0.1502 state UP group default qlen 1000
    link/ether fe:2e:10:ee:c9:93 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::fc2e:10ff:feee:c993/64 scope link 
       valid_lft forever preferred_lft forever
43: veth1KOTEO@if42: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-bond0.1503 state UP group default qlen 1000
    link/ether fe:67:84:8e:61:d0 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::fc67:84ff:fe8e:61d0/64 scope link 
       valid_lft forever preferred_lft forever
45: vethYESDY5@if44: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue master br-bond0.1504 state UP group default qlen 1000
    link/ether fe:d9:37:cc:37:c6 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet6 fe80::fcd9:37ff:fecc:37c6/64 scope link 
       valid_lft forever preferred_lft forever