I'm game for trying any other ideas that LaPastenague or any other helpful onlookers might have.
I am in the same boat.. not with fibre.. that is yet to make it to my house but with ADSL Apple routers cannot maintain a connection in PPPOE.. it was a shock to me that something as fundamental as using a bridged modem in front of the airports (I have tested lots.. all fail). And Apple has no way to fix the problem. I have no choice but to use a different brand router..
(I didn't bother with the 10Mbps cause that's significantly slower than the internet speed I'm paying for)
It is a test.. worth it to see if it works or not.. most likely not but still have a go..
Although I do not believe it will work.. you can try a small 10/100 switch or a crossover cable between the ONT and the AE.
Do the connectivity lights come on??
Apple offers nothing in terms of low level diagnostics or even logging now.. so to find out what is wrong is so difficult it is not worth the waste of time.
Many people find the Apple router does not with fibre ONT.. even if it picked up an address it will not route.
If you are a diy soldering person.. you can solder in a console terminal to your AE.. and you can then see a bit more of what is happening.. it is hard though because this is NetBSD and I am not sure of all the commands. Plus the debug software is not there.
This is silly though and not your job..
I am running a WNDR3800 (or DIR-825) running gargoyle firmware.. far superior routing and controls to anything apple can conceive.
Please google it as I am not allowed to give URL.. post deleted if I do.
And run the AE in static IP mode instead of bridge.
https://discussions.apple.com/thread/5981989?answerId=25135547022#25135547022&ac_cid=tw123456#
In IMHO this works somewhat better than bridge.. and with the above console port soldered in I can see what is going on.. eg
aegen5router# route show
Routing tables
Internet:
Destination Gateway Flags
default 192.168.2.254 UG
127.0.0.0/8 127.0.0.1 UG
169.254.0.0/16 link#13 U
192.168.2.0/24 link#13 U
192.168.2.202 04:e5:36:b2:95:2f UHL
192.168.2.203 5c:96:9d:67:53:cd UHL
192.168.2.206 28:37:37:15:4d:6f UHL
192.168.2.207 link#13 UHL
192.168.2.209 b8:3e:59:78:6c:ca UHL
192.168.2.222 d0:22:be:b5:f7:f3 UHL
192.168.2.223 48:60:bc:00:6a:13 UHL
192.168.2.254 cc:b2:55:c9:b9:e3 UHL
Internet6:
Destination Gateway Flags
fe80::%bridge0 link#13 U
fe80::2a37:37ff:fe15:4d6f%bridge0 28:37:37:15:4d:6f UHL
fe80::5e96:9dff:fe67:53cd%bridge0 5c:96:9d:67:53:cd UHL
fe80::7273:cbff:feb3:71a4%bridge0 70:73:cb:b3:71:a4 UHL
ff01:d:: link#13 U
ff02::%bridge0 link#13 U
arp -a
? (192.168.2.202) at 04:e5:36:b2:95:2f on bridge0
? (192.168.2.203) at 5c:96:9d:67:53:cd on bridge0
? (192.168.2.206) at 28:37:37:15:4d:6f on bridge0
? (192.168.2.207) at (incomplete) on bridge0
? (192.168.2.209) at b8:3e:59:78:6c:ca on bridge0
? (192.168.2.222) at d0:22:be:b5:f7:f3 on bridge0
? (192.168.2.223) at 48:60:bc:00:6a:13 on bridge0
? (192.168.2.254) at cc:b2:55:c9:b9:e3 on bridge0
ifconfig
mgi0: flags=e943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,LINK1,LINK2,MULTICAST> metric 0 mtu 1500
options=83f80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx,UDP4CSUM_Rx,UD P4CSUM_Tx,LRO4>
extra flag=1<NOINET6>
ether 70:73:cb:b3:71:a4
media: none (none)
mgi1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=83f80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx,UDP4CSUM_Rx,UD P4CSUM_Tx,LRO4>
extra flag=1<NOINET6>
ether 70:73:cb:b3:71:a4
media: none (none)
bwl0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 2290
options=80000<LRO4>
extra flag=0<>
ether 70:73:cb:b8:1b:b1
media: autoselect mode 11ng hostap
status: running
bwl1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 2290
options=80000<LRO4>
extra flag=0<>
ether 70:73:cb:b8:1b:b2
media: autoselect mode 11na hostap
status: running
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 33172
extra flag=0<>
inet 127.0.0.1 netmask 0xff000000
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x5
wlan0: flags=e943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,LINK1,LINK2,MULTICAST> metric 0 mtu 1500
options=80000<LRO4>
extra flag=1<NOINET6>
ether 70:73:cb:b8:1b:b1
media: autoselect mode 11ng hostap
status: running
ssid TC24ghz channel 6 (2437 Mhz 11g ht/20) bssid 70:73:cb:b8:1b:b1
authmode WPA2/802.11i privacy ON deftxkey 2 AES-CCM 2:128-bit
AES-CCM 3:128-bit txpower 11 dotd mcastrate 2 scanvalid 60
protmode CTS ht20 -htcompat ampdulimit 64k ampdudensity 8
-amsdutx amsdurx shortgi stbc ldpc wme burst dwds dtimperiod 3 -dfs
-inact
wlan1: flags=e943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,LINK1,LINK2,MULTICAST> metric 0 mtu 1500
options=80000<LRO4>
extra flag=1<NOINET6>
ether 70:73:cb:b8:1b:b2
media: autoselect mode 11na hostap
status: running
ssid TC5ghz channel 149 (5745 Mhz 11a ht/40+) bssid 70:73:cb:b8:1b:b2
authmode WPA2/802.11i privacy ON deftxkey 3 AES-CCM 2:128-bit
AES-CCM 3:128-bit txpower 18 dotd mcastrate 6 mgmtrate 6 scanvalid 60
-htcompat ampdulimit 64k ampdudensity 8 -amsdutx amsdurx shortgi stbc
ldpc wme burst dwds dtimperiod 3 -inact
pppoe0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> metric 0 mtu 1492
extra flag=1<NOINET6>
bridge0: flags=e043<UP,BROADCAST,RUNNING,LINK1,LINK2,MULTICAST> metric 0 mtu 1500
options=83f80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx,UDP4CSUM_Rx,UD P4CSUM_Tx,LRO4>
extra flag=2<PFQUICKPASS>
ether 70:73:cb:b3:71:a4
inet6 fe80::7273:cbff:feb3:71a4%bridge0 prefixlen 64 scopeid 0xd
inet 192.168.2.201 netmask 0xffffff00 broadcast 192.168.2.255
inet 169.254.247.54 netmask 0xffff0000 broadcast 169.254.255.255
priority 32768 hellotime 2 fwddelay 15
maxage 20 holdcnt 6 proto stp maxaddr 100 timeout 1200
member: wlan2 flags=3<LEARNING,DISCOVER>
member: wlan1 flags=3<LEARNING,DISCOVER>
member: wlan0 flags=3<LEARNING,DISCOVER>
member: mgi1 flags=3<LEARNING,DISCOVER>
member: mgi0 flags=3<LEARNING,DISCOVER>
wlan2: flags=e943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,LINK1,LINK2,MULTICAST> metric 0 mtu 1500
options=80000<LRO4>
extra flag=1<NOINET6>
ether 70:73:cb:b8:1b:b1
media: autoselect mode 11ng wds
status: running
ssid "" channel 6 (2437 Mhz 11g ht/20) bssid 70:73:cb:b8:1b:b1
authmode 802.1x privacy OFF txpower 11 bmiss 7 scanvalid 60
protmode CTS ht20 -htcompat ampdulimit 64k ampdudensity 8
-amsdutx amsdurx shortgi stbc ldpc wme burst bintval 1
So how mad are you .. really??